Sansevieria hallii on the front porch, acclimating to the outdoors. There is a new leaf forming at the base of the leaf furthest to the right.
I love this plant. The phrase, "Strong, silent, type" seems very apt. (Well, plants don't generally make noise, but some of them manage to be drama queens nonetheless.) It has those thick, solid leaves that have earned it the sobriquet 'Baseball Bat.' It is easy to care for, liking a sunny spot indoors and minimal watering. And it puts out its single leaf every year, no fuss, no bother.
What I didn't mention in my original post was that it was sent to me as a single-leaved plant in 2005, by the same generous Garden Web poster who had sent me my Crassula ovata 'Gollum' two years previously. Thanks, CactusMcHarris!